| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Italy | 2 | |
| #5 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machine tools | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Office furniture | |
| #2 | Punching metal | |
| #3 | Workshop equipment | |
| #4 | Locks | |
| #5 | Doors and windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Irle Friedhelm | 5 |
| #2 | Joachim Hedfeld | 4 |
| #3 | Hedfeld Joachim | 4 |
| #4 | Friedhelm Irle | 3 |
| #5 | Dettlaff Manfred | 2 |
| #6 | Griedhelm Irle | 1 |
| #7 | Heukelbach Alexander | 1 |
| #8 | Stamm Aloysius | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9117687D0 | Lockers | |
| GB9117688D0 | Wardrobe | |
| DE4011911A1 | Double door made of plate - incorporates vertical closure fillet on one door engaging behind other to protect against dust | |
| DE3535278A1 | Work bench | |
| DE3535277A1 | Metal cabinet | |
| DE3103281A1 | Material cabinet |